I was reading the Editorial from my DatabaseWeekly.com newsletter by Steve Jones (Blog|Twitter). The gist of the article was how knowledge is use-it-or-lose-it, the longer you go without using a skill the less of it you remember. One of his links was to an excellent article by Michael Swart (Blog|Twitter) about the Acid properties of a database. I am not going to try to rewrite his article, instead I'll give you a link.
ACID Properties by Example
I hope that every(other) Monday I can find an article somewhere on the web that goes into one of the database fundamentals that either you haven't taken the time to learn or maybe just need a quick refresher on. These posts will be in addition to and not instead of my "regular" blog posts.